Jumbo Coil Aluminum Foil 8011 O Roll Raw Materials
The raw materials of aluminum foil can determine the quality of the products produced. If you choose high-quality raw materials, the quality of the products produced will be greatly guaranteed. However, no matter how good the quality of the raw materials, the finished product is not perfect and will have flaws, but these flaws are basically problems in the production process.
The first thing to talk about is roll printing, rolling eyes, and uneven gloss. The main reasons for this kind of defect are: incorrect grinding of the roll; damage to the roll by foreign matter: roll damage due to defects in the incoming material; fatigue of the roll; impact and slippage between the rolls. All the factors that can cause damage to the surface of the roll will be harmful to aluminum foil rolling.
Due to the high surface finish of the aluminum foil roll, slight uneven gloss will also affect its surface condition. Regularly clean the rolling mill, keep the rolling mill clean, ensure the normal operation of the roll cleaner, regularly replace the roll, and reasonable grinding are the basic conditions to ensure the uniformity of the aluminum foil surface after rolling.
Then there is the problem of wrinkles. Due to the large plate shape problem, the aluminum foil will form wrinkles when it is rolled or opened. The essence is that the tension is not enough to make the foil surface flat, which will cause wrinkles.
There are gaps. The seam is a peculiar defect when the raw material is rolled, and it cracks in a straight line along the longitudinal direction during rolling, often accompanied by the appearance of metal wires. The root cause of the seam is the discount on the feed side, which often occurs in the middle, mainly due to loose or bad rolls in the middle of the incoming material. Severe slits cannot be rolled, and slight slits crack in the subsequent slitting, which often causes a lot of waste.
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